The left side will be showing the Primary Partition. That’s the remaining bit that you can see in Windows. The right will show the “Unallocated” part. If you right click on the Active section, you’ll see that the “Extend Volume” option is greyed out, so it’s best just to delete it.
There’s no recovery of data from this. Anything on the stick will be gone forever, so do think again to make sure there’s nothing important on it.
And having issued that warning, I should add that there’s no guarantee that the data isn’t recoverable. Just don’t rely on it. But, importantly, don’t rely on deleting a partition as a certain way of completely eliminating data that you want destroyed. There are likely tools available to recover it.
So, with all that in mind, select “Delete Partition” and click through the warning message. You’ll be rewarded with the whole 59.62GB now in one “Unallocated” block.
Right click on it and choose “New Simple Volume”. That starts up a wizard that steps you through the process. However you’ll have a choice only of exFAT or NTFS for formats, not FAT32. If your drive came formatted as FAT32, and that’s the way your applications need it, you’ll have to look to a third party tool to do the formatting. Windows won’t do it for you. Otherwise, exFAT is probably best. Even though not everything will read it, most modern devices will.